| Salvage Store London Limited | Administrative & support | 2014 |
| Sandyboy Limited | Real estate | 2005 |
| Saradan Ltd | Professional & scientific | 2024 |
| Sarah Mailer Design Ltd | Other services | 2016 |
| Sarmayacar Procheck Ltd | Professional & scientific | 2017 |
| Saultcombe Infrastructure Integrity Limited | Professional & scientific | 2026 |
| Scribble Communications Limited | Professional & scientific | 2006 |
| Seabrich Properties Ltd | Real estate | 2004 |
| Seagull Travel & Trading Limited | Administrative & support | 2009 |
| Sealbond Limited | Real estate | 2011 |
| Secomak Holdings Limited | Extraterritorial | 2005 |
| Serendib Investments Limited | Professional & scientific | 2006 |
| Shadeart Limited | Wholesale & retail | 2007 |
| Shademakers Limited | Manufacturing | 2004 |
| Shaws Cars Ltd | Wholesale & retail | 2022 |
| SHD Marine Shipping Company Limited | Transport & logistics | 2019 |
| Sheels Educational Limited | Education | 2002 |
| Sheldonwood International Ltd | Real estate | 2015 |
| Shield Property Holdings LLP | | 2007 |
| Shiran Investments Ltd | Construction | 2020 |
| Shiran's Chelsea Investment Limited | Wholesale & retail | 2022 |
| Shiva (Mailbox) Limited | Hospitality | 2007 |
| Shiva (York) Limited | Hospitality | 2007 |
| Shiva Hotels Group LLP | | 2015 |
| Showbiz International Limited | Arts & recreation | 2007 |
| Silentcolours Ltd | Professional & scientific | 2018 |
| Silixa Ltd | Administrative & support | 2007 |
| Silver Cleaning Limited | Households | 2013 |
| Simsom Ltd | Wholesale & retail | 2020 |
| SIX Stars Events Limited | Arts & recreation | 2010 |
| SIX:28 Consulting Limited | Professional & scientific | 2012 |
| Slades Farm Trust Limited | Other services | 2017 |
| Sloane & Hyde Limited | Information & communication | 2015 |
| Slowstorm Limited | Extraterritorial | 2013 |
| SM Holdings Limited | Financial services | 2015 |
| Smart Environment Property Developments Ltd | Construction | 2016 |
| Solstice Sales Limited | Administrative & support | 2017 |
| Sparsi Build & Design Limited | Construction | 2021 |
| Spring Drive Limited | Wholesale & retail | 2016 |
| ST Aldates Limited | Real estate | 2011 |
| Stardeck Limited | Administrative & support | 2010 |
| Steve Lalanne Ltd | Other services | 2025 |
| Streamgold Properties Limited | Real estate | 1991 |
| Style Fashions Limited | Wholesale & retail | 1996 |
| Sunflower Operations LLP | | 2015 |
| Sunshine Properties & Investments Ltd | Real estate | 2020 |
| Sunwave Research Limited | Information & communication | 2012 |
| Sweep Logistics LLP | | 2023 |
| Synergy Investments Limited | Financial services | 2011 |
| Talk Time International Limited | Administrative & support | 2024 |
| Targetnext Property Management Limited | Households | 1989 |
| Tartan House Limited | Administrative & support | 2012 |
| Taste Models Limited | Professional & scientific | 2022 |
| Teldra Enterprise Limited | Other services | 2020 |
| THE a & F Charitable Foundation | Health & social care | 2004 |
| THE Big 6 Limited | Health & social care | 2025 |
| THE Cooper Family Limited | Professional & scientific | 2015 |
| THE Credit Protection Association Limited | Financial services | 1926 |
| THE Gilbert Group Property Holdings Ltd | Construction | 2025 |
| THE LCH Group Ltd | Financial services | 2020 |
| THE Optical Gallery Limited | Administrative & support | 1997 |
| THE Original Showhouse Company Limited | | 1992 |
| THE Quintessa Art Collection Limited | Manufacturing | 1986 |
| THE Strategic Club Limited | Information & communication | 2012 |
| THE Travel DEN Limited | Extraterritorial | 2023 |
| Themis Transport Facilities LLP | | 2020 |
| Thorsden Development Limited | Real estate | 2011 |
| Thorsden Holdings Ltd | Financial services | 2020 |
| Tobi Hannah Ltd | | 2010 |
| Tokokan Limited | Information & communication | 2015 |
| Total Credit Management System Limited(The) | Financial services | 1981 |
| TPD Properties Limited | Real estate | 2018 |
| Transearch Commercial Investigators Limited | Financial services | 1973 |
| Trefoil Tutors Limited | Education | 2011 |
| Trepidation Limited | Real estate | 2015 |
| Trif's Maintenance Services Ltd | Construction | 2019 |
| Trizone Limited | Real estate | 2015 |
| Trundie Delivery & Logistics LLP | | 2020 |
| Turbo Operations LLP | | 2023 |
| TVM Consulting Limited | Other services | 2001 |
| Two Make Ltd | Manufacturing | 2012 |
| Tyonex Limited | Other services | 2014 |
| UK Electrical Supplies Ltd | Wholesale & retail | 2005 |
| UK Friends of the Schneider Children's Hospital | Health & social care | 2008 |
| Unitedgrids Ltd | Information & communication | 2006 |
| Vallentine, Mitchell & Co., Limited | Information & communication | 1949 |
| Valley Transportation LLP | | 2023 |
| Valleylink Limited | Real estate | 1997 |
| Ventford Limited | Real estate | 2012 |
| Verecare Ltd | Health & social care | 2026 |
| Vered Developments Limited | Construction | 2005 |
| Victoria House | Real estate | 2000 |
| Viewrose Limited | Real estate | 2011 |
| Villecrown Properties Limited | Real estate | 2010 |
| Virtue Investment Holdings Limited | Financial services | 2023 |
| Vital Brands Limited | Wholesale & retail | 2005 |
| VSA IT Consulting Ltd | Information & communication | 2024 |
| W & L Investments LLP | | 2016 |
| W Gaines Limited | Wholesale & retail | 2019 |
| W V Asset Management 2 Ltd | Real estate | 2024 |